Improved oiler for the slides of steam-engines



@anni @wird I naar sam CHRISTOPHE-R C. TRACY, OF NEW YORK, N. Y., ASSIGNOR TO HIMn SELF AND JAMES E. GRANNISS,- OFSAME PLACE.

Letters Patent N 93,772, dated August 17, 1869.

IMPRO'VED OILER FOR THE SLIDES OF STEAM-ENGINES.

The Schedule referred to in these Letters Patent andmaking part of the same.

To all whom it may concern Be it known that I, CHRISTOPHER C. TRACY, of the city and State'of New York, have invented and made a new andnseful Improvement in Oilers for the Slides and Journals of Engines, &c.; and I do hereby declare the following to be a full, clear, and exact description ofthe said invention, reference being had to the annexed drawing, making part of this specification, wherein-e- Figure 1 is a plan of the said oiler, as applied to the slide of a horizontal engine, and

Figure 2 is an elevation of the said oiler, the crosshead being shown in section.

Similar marks of reference denote the same parts.

Great diticnlty has heretofore been experienced in lubricating the slides of engines, as the sliding movement of the boxes or gibs of the cross-head causes the oil to be forced or scraped along on the slide to the ends of the movement, .at which points the accumulation drops oil' or runs away.

It frequently happens that the slides become dry, and their the parts are rapidly injured by friction, and when the boxes or gibs do not rest properly on the slides, the oil runs out rapidly from the oil-cup.

My invention is t'o obviate the before-mentioned diiculty, and consists in elastic absorbent oil-holdling roHers, applied on each side of the slide, to take up surplus oil at the extremes .of the stroke, and spread the same upon the'slide, throughout the lengthA of the same, on the return movement, thus constantly lubricating the slide, and' eiiectually preventing the parts working loose andthe oil ruiming out, the rollers being supported in yielding bearings.

.These devices are also available with journals? and bearings.

In the drawinga a represent the slides;

b, the cross-head upon the piston-rod c,-

d d are the boxes or gibs set up by the screws e e.;

` and f f f represent oil-cups,l which may bensed. These parts` may be of any ordinary construction, as ymy inventioudoes not relate tothese.

At each side of the cross-head I apply elastic absorbing oil-holding rollers 1', fi, the axes of which are ,set `in bearings l Z, andl springs may be employed to keep the rollers it in contact with the surface of the slides a a.

I prefer to use rollers made of a strip of woollen fabric, and I apply rollersat each side of the crosshead, so as to act on the under side ofthe slides a.

It will be e-vident that, as the gibs of the crosshead press the oil along upon the slide, that, at the return movement, the oil is taken by the absorbent elastic roller and spread upon the slide again, thus keeping the surface lubricated, and this takes place at each end of the stroke and at both sides of the slide.

With horizontal engines, I prefer to employ twoor moreholes s, through the slides, so as to supply oil to the under sides of the slides by the oil that passes through these holes.

It will be evident that this invention, when applied to the box of a journal, will act in the aforesaid mannerto spread the oil and prevent the weight of the shaft, or the strain thereon, forcing the oilv out of the box.

In this case'I prefer to make an incision irl-the under side of the cap of the journal-box suiiiciently large to retain a roller of elastic por-ous material, toY

The elastic absorbent oil-holding rollers, sup

ported in yielding bearings, and applied in substantially the manner specified, to spread the lubricatingmaterial on the slides or journals of engines and other machines, for the purposes specified.

'In witness whereof, I have hereunto set my simiature, this 20th day of April, A. D. 1869.

CHRISTOPHER C. TRAGY.

Witnesses: Y, Geo'. D.- WALKER, Guo. T.;P1Noxnnr. 

